1694-48-0

Basic information

• Product Name: Pyridinium, 2-[(1E)-2-[4-(dimethylamino)phenyl]ethenyl]-1-methyl-, iodide
• CAS NO: 1694-48-0
• Molecular Formula: C16H19N2.I
• Molecular Weight: 366.245
• Mol File: 1694-48-0.mol
• Article Data: 11

Chemical Properties

• CAS DataBase Reference: Pyridinium, 2-[(1E)-2-[4-(dimethylamino)phenyl]ethenyl]-1-methyl-, iodide(CAS DataBase Reference)
• NIST Chemistry Reference: Pyridinium, 2-[(1E)-2-[4-(dimethylamino)phenyl]ethenyl]-1-methyl-, iodide(1694-48-0)
• EPA Substance Registry System: Pyridinium, 2-[(1E)-2-[4-(dimethylamino)phenyl]ethenyl]-1-methyl-, iodide(1694-48-0)

Safety Data

• Hazardous Substances Data: 1694-48-0(Hazardous Substances Data)

Upstream product

• 100-10-7 4-dimethylamino-benzaldehyde 
• 2156-29-8 (E)-2-[4-(dimethylamino)phenyl]vinyl-1-methylpyridinium iodide 
• 579-72-6 2-(dimethylamino)benzaldehyde 
• 872-73-1 N-methyl-2-methylpyridinium iodide 
• 6203-18-5 p-dimethylaminocinnamaldehyde 

Downstream Products

• 1694-48-0 C₁₆H₁₉N₂⁽¹⁺⁾*I^(1-) 
• 1246473-84-6 (E)-2-(4-(dimethylamino)styryl)-1-methylpyridinium 4-methoxybenzenesulfonate 
• 1246473-86-8 (E)-2-(4-(dimethylamino)styryl)-1-methylpyridinium 4-chlorobenzenesulfonate 
• 1246473-85-7 (E)-2-(4-(dimethylamino)styryl)-1-methylpyridinium 4-bromobenzenesulfonate 
• 1246473-87-9 (E)-2-(4-(dimethylamino)styryl)-1-methylpyridinium 4-aminobenzenesulfonate 

Relevant articles and documents

Intramolecular charge transfer of push-pull pyridinium salts in the singlet manifold

The solvent effect on the photophysical and photochemical properties of the iodides of three trans (E) isomers of 2-D-vinyl,1-methylpyridinium, where D is a donor group (4-dimethylaminophenyl, 3,4,5-trimethoxyphenyl and 1-pyrenyl), was studied by stationary and transient absorption techniques. The results obtained allowed the negative solvatochromism and relaxation pathways of the excited states in the singlet manifold to be reasonably interpreted. Resorting to ultrafast absorption techniques and DFT calculations allowed information on the excited state dynamics and the role of the solvent-controlled intramolecular charge transfer (ICT) processes to be obtained. The structure-dependent excited state dynamics in nonpolar solvents, where the ICT is slower than solvent rearrangement, and in polar solvents, where an opposite situation is operative, was thus explained. The push-pull character of the three compounds, particularly the anilino-derivative, suggests their potential application in optoelectronics.

X-ray and DFT studies of the structure and spectral property of 2-[2-(4-dimethylaminophenyl)ethenyl]-1-methyl-pyridinium iodide

A hemicyanine dye: 2-[2-(4-dimethylaminophenyl)ethenyl]-1-methyl-pyridinium iodide (1) was synthesized and characterized by X-ray diffraction, 1H NMR, MS, IR, UV-Vis spectra and elemental analysis. The crystals are monoclinic, space group P21/c, with a = 7.1231(8), b = 20.672(2), c = 10.9642(12) ?, V = 1605.7(3) ?3, and Z = 4 (at 298(2) K). Crystal stacking scheme indicates the hydrogen bonds and intermolecular π?π interactions; the molecular planes arrange in a head-to-tail fashion along the ab plane due to the strong 'push-pull' electron system. Molecular geometries, frequencies and absorption properties were calculated at DFT/TD-DFT level using two hybrid exchange-correlation functionals, B3LYP and PBE1PBE. These calculations on (1) provide deep insight into its electronic structure and property.

Solvent-free condensation of methyl pyridinium and quinolinium salts with aldehydes catalyzed by DBU

Methylpyridinium and methylquinolinium salts were condensed under solvent-free conditions with aromatic aldehydes in the presence of 1,8-diazabicyclo[5.4.]undec-7-ene (DBU) as catalyst, by grinding at room temperature. The products are dyes or useful intermediates. The DBU can be easily recycled and reused. Taylor & Francis Group, LLC.